Add Batch Controls Mode supporting fixed variant coordinates and customizable variant types, VAF, and indel sizes

Support optional gzip compression for FASTQ output files to reduce size

Enable extraction and downloading of synthetic paired-end FASTQ files

Add window-based variant placement strategy for Direct Probe Coordinates mode

Use exact amplicon coordinates as read length in PCR amplicon mode

Support hg19 reference genome and PCR Amplicon sequencing style

Support variant generation in Direct BED Mode (ignoring MANE transcripts) and improve dynamic tracks in igv.js

Support loading MANE transcripts in igv.js, add toggles for CDS/intron/off-target variants, and add MANE transcripts download

Add interactive IGV.js variant browser and static serving configuration